Multiply by 12, 16, 18 and 24 Worksheet

Maths tricks trick 19: Factor chains for multiplying · Set 820 · 40 questions

The trick (Chain the factors): Split the multiplier into two small factors: 12 = 3 × 4, 14 = 2 × 7, 15 = 3 × 5, 16 = 4 × 4, 18 = 2 × 9, 24 = 4 × 6. Multiply by the first factor. Multiply that answer by the second factor (× 4 is double, double).

1. 1.32 × 14 =
2. 2.24 × 24 =
3. 3.44 × 15 =
4. 4.12 × 16 =
5. 5.45 × 24 =
6. 6.17 × 24 =
7. 7.35 × 12 =
8. 8.17 × 14 =
9. 9.46 × 24 =
10. 10.12 × 15 =
11. 11.28 × 18 =
12. 12.12 × 18 =
13. 13.14 × 14 =
14. 14.47 × 24 =
15. 15.42 × 18 =
16. 16.45 × 12 =
17. 17.30 × 16 =
18. 18.23 × 12 =
19. 19.47 × 12 =
20. 20.40 × 15 =
21. 21.21 × 18 =
22. 22.11 × 24 =
23. 23.18 × 14 =
24. 24.32 × 15 =
25. 25.18 × 15 =
26. 26.11 × 12 =
27. 27.11 × 15 =
28. 28.42 × 15 =
29. 29.37 × 16 =
30. 30.34 × 12 =
31. 31.24 × 18 =
32. 32.25 × 15 =
33. 33.45 × 18 =
34. 34.49 × 15 =
35. 35.16 × 14 =
36. 36.48 × 18 =
37. 37.43 × 14 =
38. 38.16 × 15 =
39. 39.13 × 15 =
40. 40.26 × 15 =

Free maths tricks lessons, practice and worksheets at talentjr.in/maths-tricks